20203201 has 4 divisors (see below), whose sum is σ = 20696004. Its totient is φ = 19710400.

The previous prime is 20203187. The next prime is 20203217. The reversal of 20203201 is 10230202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2563201 + 17640000 = 1601^2 + 4200^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203201 - 2¹³ = 20195009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246340 + ... + 246421.

It is an arithmetic number, because the mean of its divisors is an integer number (5174001).

Almost surely, 2^20203201 is an apocalyptic number.

It is an amenable number.

20203201 is a deficient number, since it is larger than the sum of its proper divisors (492803).

20203201 is an equidigital number, since it uses as much as digits as its factorization.

20203201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492802.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20203201 is about 4494.7971033185. The cubic root of 20203201 is about 272.3579530697.

Adding to 20203201 its reverse (10230202), we get a palindrome (30433403).

The spelling of 20203201 in words is "twenty million, two hundred three thousand, two hundred one".